Which to use
“ei” is a verb and “er” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #9,105
- “ei” frequency rank
- #10,335
- “er” frequency rank
- 19440
- confusion score
Side-by-Side Comparison
| Feature | ei | er |
|---|---|---|
| Definition | La tercera persona singular del verbo de negación, usado en el indicativo, en el condicional y en el potencial; "no". | Él. |
Where the spellings diverge
Shared letters are muted; the letters that actually set ei and er apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
ei and er form a confusable pair in the Spanish index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by a single letter - i in “ei” becomes r in “er” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 19440, derived from the frequency rank of both members and their visual similarity.
ei is recorded at frequency rank #9,105, classified as averb, pronounced [ˈe̞i̯]. er is at rank #10,335, tagged as apron, pronounced [ˈeːɐ̯].
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 19440, this pair ranks #263,744 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "ei" and "er" be used interchangeably?
Remembering ei vs er
The fastest way to pick the right one every time.
- Check the role first: if you need a verb, it's “ei”; for a pronoun, it's “er”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “ei” entry
- Browse more pairs most likely to be confused. Most confusable